Antibiotic resistance of Vibrio parahaemolyticus and Vibrio vulnificus in various countries: A review

• The antibiotic resistance of Vibrio parahaemolyticus and Vibrio vulnificus in various countries is reviewed.
• V. parahaemolyticus and V. vulnificus displayed multi-drug resistance.
• Both environmental and clinical isolates showed similar antibiotic resistance profiles.
• Most predominant antibiotic resistance profiles were ampicillin, penicillin and tetracycline regardless of the countries.

Vibrio parahaemolyticus and Vibrio vulnificus are the leading causes of seafood associated infections and mortality in the United States. The main syndromes caused by these pathogens are gastroenteritis, wound infections, and septicemia. This article reviewed the antibiotic resistance profile of V. parahaemolyticus and V. vulnificus in the United States and other countries including Italy, Brazil, Philippines, Malaysia, Thailand, China, India, Iran, South Africa and Australia. The awareness of antimicrobial resistance of these two pathogens is not as well documented as other foodborne bacterial pathogens. Vibrio spp. are usually susceptible to most antimicrobials of veterinary and human significance. However, many studies reported that V. vulnificus and V. parahaemolyticus showed multiple-antibiotic resistance due to misuse of antibiotics to control infections in aquaculture production. In addition, both environmental and clinical isolates showed similar antibiotic resistance profiles. Most frequently observed antibiotic resistance profiles involved ampicillin, penicillin and tetracycline regardless of the countries. The presence of multiple-antibiotic resistant bacteria in seafood and aquatic environments is a major concern in fish and shellfish farming and human health.